Alright, it seems like you've been listening to my critisizm, because I really enjoy this level. In fact, before I have given you 20 negatives per level. Now I only have two.

1. after the underground area, why does luigi go through a pipe? You should use the jumping entrance
2. Why do you need to power boost in order to get the third star coin if you aren't fire mario? You should put it somewhere else.

Old 3DS XL info:
I used to have a 3DSafe A9LH V11.3.0-36U with Luma in my CTRNAND. Since ReiNAND Reibooted and Re-Reileased, I "switch"ed back.
Right now, I have boot9strap with Luma 8.0 as my CFW. Though, I'd like to see other CFW's for B9S.